fix: 修复划转页面卡片互换动画效果

- 重写 AnimatedSwitcher 实现，移除多余的 Container 包裹
- 直接在 _buildAccountCard 上设置 ValueKey
- 使用 SlideTransition + FadeTransition 组合
- 上方卡片从上滑入，下方卡片从下滑入
- 动画时长 300ms，easeInOut 曲线
- 动画效果更流畅自然，卡片互换位置清晰可见

flutter_monisuo/build/web/main.dart.js_95.part.js

@@ -1,15 +1,15 @@
 ((a,b)=>{a[b]=a[b]||{}})(self,"$__dart_deferred_initializers__")
 $__dart_deferred_initializers__.current=function(a,b,c,$){var B,A={
-b4C(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
-u=new A.Zv(v,u)
+b4G(d,e,f){var y,x,w=null,v=new B.a0(),u=new B.a0()
+u=new A.Zy(v,u)
 u.bf(d,w,e,w)
 y=u.a
 x=v.r
 x.toString
 y.r=x
-v.r=A.bnH(u)
+v.r=A.bnL(u)
 return u},
-bmn(d,e){var y
+bmr(d,e){var y
 A:{if("timePicker.hours"===e){y="Hodiny"
 break A}if("timePicker.minutes"===e){y="Min\xfaty"
 break A}if("timePicker.seconds"===e){y="Sekundy"
@@ -23,38 +23,38 @@ break A}if("input.selectAll"===e){y="Vybra\u0165 v\u0161etko"
 break A}if("keyboardToolbar.done"===e){y="Hotovo"
 break A}y=null
 break A}return y},
-bnH(d){return new A.aSz(d)},
-Zv:function Zv(d,e){var _=this
+bnL(d){return new A.aSD(d)},
+Zy:function Zy(d,e){var _=this
 _.r=d
 _.z=_.w=$
 _.a=e
 _.e=_.b=$},
-aOS:function aOS(){},
-aSz:function aSz(d){this.a=d},
-aaw:function aaw(){}}
+aOU:function aOU(){},
+aSD:function aSD(d){this.a=d},
+aay:function aay(){}}
 B=c[0]
 A=a.updateHolder(c[66],A)
-A.Zv.prototype={
+A.Zy.prototype={
 h(d,e){var y=this.r.a4(e)
 return y==null?this.a.a4(e):y},
 gb4(){var y=this,x=y.z
 if(x===$){if(y.w===$)y.w=y
-x=y.z=new A.aOS()}return x},
+x=y.z=new A.aOU()}return x},
 gb9(){return this.r}}
-A.aOS.prototype={
+A.aOU.prototype={
 gbh(){return"Vystrihn\xfa\u0165"},
 gbg(){return"Kop\xedrova\u0165"},
 gbi(){return"Vlo\u017ei\u0165"},
 gbe(){return"Vybra\u0165 v\u0161etko"}}
-A.aaw.prototype={}
+A.aay.prototype={}
 var z=a.updateTypes([])
-A.aSz.prototype={
-$1(d){return A.bmn(this.a,d)},
+A.aSD.prototype={
+$1(d){return A.bmr(this.a,d)},
 $S:2};(function inheritance(){var y=a.mixin,x=a.inherit
-x(A.aaw,B.a_)
-x(A.Zv,A.aaw)
-x(A.aOS,B.aZ)
-x(A.aSz,B.aR)
-y(A.aaw,B.aX)})()
-B.b4(b.typeUniverse,JSON.parse('{"Zv":{"a_":[]}}'))};
-(a=>{a["t3lt3yXr9CUdESyHifjwYmR1+uo="]=a.current})($__dart_deferred_initializers__);
+x(A.aay,B.a_)
+x(A.Zy,A.aay)
+x(A.aOU,B.aZ)
+x(A.aSD,B.aR)
+y(A.aay,B.aX)})()
+B.b3(b.typeUniverse,JSON.parse('{"Zy":{"a_":[]}}'))};
+(a=>{a["+JQCjYjG3VHUCKho4W2a28ZVIpg="]=a.current})($__dart_deferred_initializers__);